Liquid dispensing apparatus



W. S. TOWNSEND LIQUID DISPENSING APPARATUS July 28, 1931."

Filed m. 22, 1926 fix/677W:

Patented July 28, 1931 UNITED STATES PATENT OFFICE wILnuu s. 'rownsmfi),or nocnns'rna, PENNSYLVANIA, assxenoa, pi ME'SNE as sremms, To run wannarom'rron or mnnm:

PUMP COMPANY, OF BALTIMORE, MARYLAND, A COR- LIQUIID DISPENSINGAPPARATUS Application llIed Ianuary '22, 1926. Serial No. 82,920

I This invention relates to liquid dispensing apgaratus. a

ne object-of the invention is to royide simple, reliable and eflicientliquid ispens-- mg apparatus which will permita continuous. flow ofliquid to be measured and dispensed, 1

thereby reducing to a minimum the time required for supplying a motorvehicle. 3

Another object is to provide ap aratus of the above mentioned type inwhic liquid is accurately measured and dispensed.

Another object is to provide apparatus of the type indicated inwhich-the various parts of the apparatus are timed and controlled tosecure accurate measurement of liquid. and facilitate the dispensingthereof.

Another object is to provide liquid dispensing a paratus in which theoperation of the valve or controlling the passage of liquid 99 to andfrom the measuring chambers is properly timed. l

Another object is to alternately supply to each of a plurality ofmeasuring chambers a predetermined amount of liquid, any excess suppliedliquid being diverte in a controlled manner, excess pressure developedas a resultof the sup 1y of excess liquid being effective forcontrolling the operation of the valye whichv controls supply to anddischarge .of liquid from said measuring chambers.

'Another object is to control the various parts of the apparatus and theflow of liquid in a manner to meet all of the requirements forsuccessful commercial use.

by means of the arrangement disclosed an the accompanying sheet ofdrawings, in 'which- Figure 1 is a vertical longitudinal sectional view,parts being in elevation, of liquid glispensing apparatus embodying myinvention Figure 2 is a' front elevation of the fourway control valve bymeans of which flow of liquid between the source of supply, measuringchambers and dispensing line is controlled; I r

Figure 3 is a detail sectional viewof the said measuring chambers valvetaken the-plane ofline 3-3 of;Figure Figure 4 is a detail frontelevation ofthe rotary valve member; f a

Flgure 5 is an enlarged-fragmentary sectional view taken in the plane ofline 55 of Figure 1 and disclosing some of the timing or control partsby means of which the operation of the valve is controlled;

mechanism; and,

Figure 6 is an enlarged fragmentary sect1ona1 view ofpart of the timingcontrol Figure 7'is an enlarged fragmentary sec- 'onal view of the airconnection between the measuring chambers and showing one 'of the floatvalves. 4

The various novel features of the invention will be apparent from thefollowing description and drawings, and will be particularly pointed outin the appended claims.

Referring to the figures of the drawings,in

which the apparatus is shown somewhat diagrammatically, it will be notedthat the invention' is illustrated in connection with continuous flowliquid dispensing apparatus including two preferably transparentmeasuring chambers or containers wand 11, into which liquid is forcedfrom any suitable source represented by the liquid storage tank 12, theliquid being drawn therefrom, in this instance, through a pipe 13 by apump 14 and then forced through a pipe 15 alternately throughpassagewayslG and 17 in a valve 18 andrespectively through pipes 19 and20 into C 10 and-'11 respectively. After the liquid is measured withmThe-Se and 6131181. objects are accomplished the measuring chambers 10and 11, it is discharged alternately from the said chambers through the'samepipes 19 and 20 and through the passageways 16 and'17in valve 18and out throu h the dispensing or service pipe handle 23 is securedwhereby the pump may be actuated either by hand or motor.

As shown in Figure 1' of the drawings,

liquid is being pumped trough the supply lirie, through valveport 29,,valve arcuate passageway 17, valve port 30, ipe 20, into the measuringchamber 11. At t e same time, l1qu1d which has been measured inmeasuring chamber 10 is passing downwardly and outwardly through pipe19, valve port 31, valve arcuate passageway 16,, valve port 32, and outthrough dispensing pipe 21. As liquid 5 rises in the measurin chamber11, air is forced by said rising liquid from the upper part of saidmeasuring chamber throug an air pi 33 into the upper part of measuringchamgr 10. Air-will continue to be transferred from chamber llto chamberuntil the liquid rises up into engagement with and presses a float valve34 into closed position against its seat 35. When the float valve 34closes, the supply of liquid to the measuring chamber ceases, but thepump 14 continues to be operated for supplying an excess amount ofliquid. As a result thereof, the pump continuing in operation,.liquidpressure is built up in-the supply pipe 15 and pipes 36, 37 and 38, thefirst pipe 36 being connected to the supply p'pe 15, and pipes 37 and 38being connected to pipe 36. 1pc 37 is connected to a sylphon bel lows orthe like 39 having an operating rod 40 which is provided with weights 41to prevent operation of the sylphon bellows until a certainpredetermined liquid pressure has been built u in the sylphon ,bellows.Pivotally mounte at 42 upon the sylphon operating rod 40 is a pawl 43which is-yieldably pressed into the positionshowninFigures 1 and 6 byasuitable spring44. This pawl 43 is limited in its clock wise rotativemovement by a stop 45 which" is adapted to engage the rod 40, as shownin Figures 1 and 6. One end 46 of a lever 47 is in engagement with the.pawl 43, the lever being pivotally supported at an intermediate point48. B referring to Figure 5, it will be noted that t e opposite end ofsaid lever 47 is provided with a cam 49 which is holding a plunger 50 inits outermost position against the tension of a spring 51.. The springpressed plunger'50 is mounted within a pocket 52 of a gear53 looselymounted upon the pump shaft 22., Said spring pressed plunger'when =free,however, is adapted to pass into a corresponding opening 54 in a collar55 secured to the pump shaft 22. When the spring pressed plunger 50. isfreed from the lever 47 and the opening 54 passes into register with theplunger, the latter snaps into the o ning, and the gear 53 is therebyactuated uring pump actuation for driving another gear 56 whic ispivotally connected to a rod 57in turn co on the shaft of the reversiblecontrol valve 18. From the above it will be apparent that when themeasuring chamber 11, for example, has been completely filled and thepump14 continues to ope ate, the fluid pr'essure'will b e built up in th.supply pipe 15 and pipes 36, 37 and 38, the excess fluid pressure firstbeing effective for expanding the sylphon bellows 39 and raising the rod40 for'causing the'pawl 43 to move the cam portion 49 ected to an arm58- the spring pressed plunger, which then rides upon the surface of thecollar 55 until the opening 54 presents itself to the plunger, en tersthe opening for causing actuation of the gear 53, and through theconnectionshereinabove described, causing a reversal of the controlvalve 18., It will be understood that the ratio of gears 53 and 56issueh that one revo-. lution of gear 53, and consequently crank 23and-pin 50, will cause gear 56, to rotate valve 18' through ninetydegrees, thereby openifig comm nication between chamber 10, pipe 19,port 31, valve assageway 17, port 29, pi

15, pump,14 and the source of supply 12. t the same time, communicationwill be established between chamber 11, pipe 20, port 36, valvepassageway 16, port 32 and. service 21. Practically immediately. afterthe lever 47 is actuated by the pawl 43, a spring '59 returns the lever47 to a position where when the spring pressed plunger 50 passes throughone revolution with its gear 53, the spring pressed plunger 50 will beautomaticall'y disengaged from the collar 55 so that the control valve18 after being rotated through its reversing movement of degrees will bepermitted to stop.

Continued pumping movement of the pump is permitted for causing theactuation of the control valve 18 b virtue of. the fact that immediatelyafter te sylphon bellows 39 has been actuated, a spring pressed reliefvalve 60 operatively associated with pipe 38 is opened for permittingthe flow of. excess pumped liquid through the pipes 36 and 38, throughpipe 61, into an excess flow recept'acle 62.- It ,will'be appreciatedthatjust as soon as the control valve 18 is reversedfrom the positionshown in Figure 1 the liquid reviously pumped into the measuring chamr11 will ass outwardly therefrom through pipe 20, va ve paxageway 16andservice line 21, and at the same time li uid will be supplied to theother measuring chamber 10 from supply pipe 15, through valve passageway17 and pipe 19, air being transferred from the up er part-of measuringchamber. 10 throughantransfervpipe 33 into measur. ing chainber 1"1.Itw-ill be understood that.

'when the measuring chamber 19 is completet 30 I Wheri the supply pipeafter one or t e othen of said ineasurmg chambers has been completelyfilled, thereby contro n with the greatest accuracy and precision t emeasurement of liquid to be measured and dischargedopera- Indicatingmechanism 63 may ltively connected to the reversing valve 18 in anydesirable manner to indicate the number of gallons measured. Calibratingplugs 64 are shown for calibrating the measuring chambers 10 and 11.Suitable vent control connections 65-are provided at the upper end- 20of each of the measurin chambers 10 and 11 i to connect the interior 0said chambers to the atmosphere when it is desired t8 empty saidmeasuring chambers when the other of sadd measuring chambers is notbeing filled." Excess flow liquidsupplied to the excess flow receptacle62 is returned from said receptacle to the su ply line 13 through a pipe66, the return 0 liquid from the excess flow receptacle bein controlledby a float valve 67. liquid in the receptacle 62 below a certainpredetermined level, the floft valve 67 is closed, but when liquid insaid receptacle 62 r'ses above. that predetermined level, the floa valve67 is raised for permitting liquid I to be drawn back into the supplyline by the pump 14. The connection including llies 36, 38, 61, 66 andexcess flow-receptaee 62 constitutes a bvpass around a portion of thesupply pipe the sylphon bellows 39 and the 40 relief valve to beingassociated with the said by-pass.

It is my intention to cover all modifications of the inventionifallingwithin the spirit and scope of the following claims:

claim: t I 1. In liquid dispensing apparatus, the combination of ameasuring container, means forsupplying liquid thereto, means forcontrolling the supply (if liquidto said container, 50. a bypass aroundthe means for supplyin liquid to said container, means associate withsaid by-pass responsive to liquid pres sure developed in the supplymeans and y-pass'for timing the operation of saidcontrolling means, andmeans whereby excess 7 pressure in said supply ipe and by-pass isrelieved, said last named; means com rising a valve limiting thepressure maintained on the supply side of said second named means. 2. Inliquid dispensing apparatus, the com bination of ameasuring container, asup ly pipe associated therewith, means for supp yliquid to saidcontainer, means for contr lling the supply of liquid to said con;-tainer,a by-pass around the means for supplyi liquid to said container,means associate with said y-pass rgsponsive to liquid I ressuredeveloped in the supply means and yass for.timing the operation, ofsaidcontro ing means, means whereb excess pressure in said supply pipe andy-pass is relieved, and means for permitting return of the excesssupplied liquid to said supply pipe.

3. In liquid dispensing apparatus, the combination of a plurality ofmeasuring con-- tainers, means for supplying liquid thereto, a

reversible valve for controlling the supply means on the supply side ofsaid valve re sponsive to liquid pressure on said supply side for timingthe operation of said valve. e, 4. In liquid dispensing apparatus, thecombination of a plurality of measurin gcontrainers, means an supplyingliquid thereto, a reversiblevalve for controlling the su ply of liquidto and the discharge of liquidrom said containers, an excess flow coction to said liquid supply means, and means respon- 'sive to liquidpresshre developed in said supply means and atleast a portion'of'saidexcess flow connection for timing the operation of said reversiblevalve, n

5. In liquid dispensing apparatus, the combination of a plurality ofmeasuring containers, a supply pipe t hrough which liquid is'supplied tosaid containers, a reversible valve for controlling the su ply of liquidto said containers, a pump for orcing the-liquid thgough said pipe, avalve controlled by-pass connection-around a portion of said supply pipeandconnected thereto on opposite sides of saidYmmp whereby'excess pumpedliquid will be forced from said supply pipe on one side of said pump andreturned to said supply pipe .on the other side of said pump, and

means responsive to liquid preseure in said of liquid alternately tosaid containers, and

valve or controlling the supply of liquid to saidcontainers,apump forforcing the liquid.

through sa'id pi e, a valve controlled by-pass connection aro ',pi e andconnected thereto on opposite sides ply .pipe on the other side of saidpump, means responsiveto liquid pressure in said by-pass connection fortiming the operation of said reversible valve, and a connection betweensaid pum and vvalve whereby the latter isactuated the former.

7. In' liquid dlspensing apparatus, the

combination ofa plurahty o measuring containers, 9. pump for supplyingliquid to' said containers,'a reversible valve for conthe connectionbetween-said pump and reversible yvalve. F

8. In liquid dispensing apparatus, the combination of a plurality'ofmeasuring contaiii ers, means for supplying liquid thereto, a

4 valve for COIItI'OHIIIg the supply. on liquid alternately to saidcontainers, and means on the supply. side of said valve responsive toliquid pressure for timing the operation of said valve.

1 containers, .a

9. In liquid dispensing apparatus, the com bination of a plurality ofmeasuring containers, a supply pipe through which liquid is supplied tosa d containers, a valve for controlling'the suppl of liquid to saidcontainers, a pump for orcing the liquid through said pipe, a valvecontrolled by-pass eonnec-' tion around a 'portionof said supply pipeand connected thereto on opposite sides'of said pump whereby excesspumped liquid will be forced from said supply pipe on one side ofsaicLpqmp and returned to said supply pipe on the other side of saidpump, and means responsive to liquid pressure in said by-pass cconneclionfor timing the operation of said valve.

10. In liquid dispensing apparatus,- the combination of a plurality ofmeasuring containers, a supply pipe through which liquid is supplied tosaid containers, a value-for nection for timing the operation of saivalve, a comiection between said pump a d valve whereby the latter isactuated by the operation ;of the former, and a relief valve mounted insaid by-pass' connection for permitting the pump to continue to operatefor reversing the valve when excess liquid is beingpumped.

12. In liquid dispensing apparatus, the combination of a measuringcontainer, a

supply pipe through which liquid is supplied thereto, a discharge pi ethrough which liquid is exhausted there om, a valve forcontrolling thesnpply of liquid to said container \hrough said suppl' pipe and fromsaid containerthrough sai displaarge pipe, a pump for pumping liquid tosaid container through said supply pipe,'a positive connection betweensaid pump and'valve for operationof said valve, said connection bei nginoperative when said container is filling, means for d1- verting excessliquid when said container is full, and means responsive to 'liquidpressure developed by the diver ted liquid to cause operation of saidpositive connection for operating said valve whereby said-container and.discharge pipe are connected forexhausting liquid from said container.

Signed at Rochester, Pennsylvania, this January, 1926.

1 8th day of v WILLLAM s. TOWNSEND;

controlling the supply of liquid to said ump uid throughsaid pipe, avalvg controlled by-pass connection around a portion of said supply pipeand connected there to on opposite sides of said pump whereby excesspumped liquid will be forced from said supply pipe on one side of saidpump and returned to said supply pipe on the "other side of said pump,means responsive to liquid pressure in said by-pass connection for tim--ing the operation of saidrvalve, and a connec-' tion between said pumpand valve whereby the latter is actuated by the operation of the former.

11. In liquid dispensing apparatus, the

' combination of a plurality, of measuring,

fthe other side of said ea sive toliquid pressure 7 saidgby vcontainers, a supply pipe through which liq for forcing the liq ios uidis supplied tosaid containers, ayalve for controlling the supply ofliquid to said containers, a pump for forcing the around a portion ofsaidsupply pipe and connected thereto on opposite sides of said pumpzwhereby excess pumped liquid will be forced from said supply pipe onone side of said pump and returned to said supply pipexpn mp, meansrespon liquid' through said pipe, :1 by-pass connection iat-

